Appended group opening in original location
Not sure you'll need to muck around with the Graph Editor - Try this first...



Select the main armature or whatever it's parented to.

Press SH-S --> Cursor to selected.

SH-A  and add an Empty.  (It will appear at the the same origin/pivot point as the armature or parent)

Parent the armature (or parent) to the Empty, choose  "Object (keep transform)"

Drag the empty around and the model should follow it.  Place it somewhere.  Run the animation.

It should do it's thing but now from it's new location.